EP 4245726 A1 20230920 - METHOD FOR PRODUCING COATED ACTIVE MATERIAL

Title (en)

METHOD FOR PRODUCING COATED ACTIVE MATERIAL

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES BESCHICHTETEN AKTIVMATERIALS

Title (fr)

PROCÉDÉ DE PRODUCTION DE MATÉRIAU ACTIF REVÊTU

Publication

EP 4245726 A1 20230920 (EN)

Application

EP 23155093 A 20230206

Priority

JP 2022043945 A 20220318

Abstract (en)

In a method for producing a coated active material, a coating layer containing niobium is formed on at least a part of a surface of an active material. The method includes: transforming a slurry containing the active material and a coating solution (11b, 21b, 31b) containing niobium into droplets to obtain slurry droplets (11, 21, 31); drying the slurry droplets (11, 21, 31) in a heated gas stream to obtain a precursor; and baking the precursor. The active material that is used to obtain the slurry droplets (11, 21, 31) contains less than 0.68 wt% of sulfur as an impurity.

IPC 8 full level

C01G 53/00 (2006.01)

CPC (source: EP US)

C01G 53/04 (2013.01 - US); C01G 53/42 (2013.01 - EP); C01P 2004/80 (2013.01 - EP); C01P 2006/80 (2013.01 - EP); Y02E 60/10 (2013.01 - EP)

Citation (applicant)

JP 6269645 B2 20180131
JP 2021130363 A 20210909 - NIPPON STEEL CORP

Citation (search report)

[X] US 2020373560 A1 20201126 - CAMPBELL STEPHEN A [CA], et al
[X] WO 2021125877 A1 20210624 - POSCO [KR], et al

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4245726 A1 20230920; CN 116779795 A 20230919; JP 2023137657 A 20230929; US 2023322580 A1 20231012

DOCDB simple family (application)

EP 23155093 A 20230206; CN 202310165136 A 20230215; JP 2022043945 A 20220318; US 202318110475 A 20230216